WintellectPowerShell

3.3.2.0

Code/Import-VisualStudioEnvironment.ps1

                                #requires -version 2.0

###############################################################################

# WintellectPowerShell Module

# Copyright (c) 2010-2014 - John Robbins/Wintellect

# 

# Do whatever you want with this module, but please do give credit.

###############################################################################

# Always make sure all variables are defined and all best practices are 

# followed.

Set-StrictMode -version Latest

###############################################################################

# Public Cmdlets

###############################################################################

function Import-VisualStudioEnvironment

{

<#

.SYNOPSIS

Sets up the current PowerShell instance with the Visual Studio environment

variables so you can use those tools at the command line.

.DESCRIPTION

Command line usage is the way to go, but Visual Studio requires numerous 

environment variables set in order to properly work. Since those are controlled

by the vcvarsall.bat cmd script, it's a pain to get working. This script

does the work of calling the specific vcvarsall.bat file for the specific version

of Visual Studio you want to use. If the vcvarsall.bat file does not exist, which

happens if you do not install the C++ tools, this cmdlet will use vsdevcmd.bat 

instead.

This implementation uses the registry to look up the installed Visual Studio 

versions and does not rely on any preset environment variables such as 

VS110COMNTOOLS. 

.PARAMETER VSVersion

The version of Visual Studio you want to use. If left to the default, Latest, the

script will look for the latest version of Visual Studio installed on the computer

as the tools to use. Specify 2008, 2010, 2012, 2013, or 2015 for a specific version.

.PARAMETER Architecture

The tools architecture to use. This defaults to the $env:PROCESSOR_ARCHITECTURE 

environment variable so x86 and x64 are automatically handled. The valid architecture 

values are x86, amd64, x64, arm, x86_arm, and x86_amd64. If the C++ tools were not 

installed, this parameter is ignored because vsdevcmd.bat only sets the environment

for 32-bit tools.

.LINK

http://www.wintellect.com/blogs/jrobbins

https://github.com/Wintellect/WintellectPowerShell

#>

    param

    (

        [Parameter(Position=0)]

        [ValidateSet("Latest", "2008", "2010", "2012", "2013", "2015")]

        [string] $VSVersion = "Latest", 

        [Parameter(Position=1)]

        [ValidateSet("x86", "amd64", "x64", "arm", "x86_arm", "x86_amd64")]

        [string] $Architecture = ($Env:PROCESSOR_ARCHITECTURE)

    )  

    $versionSearchKey = "HKLM:\SOFTWARE\Wow6432Node\Microsoft\VisualStudio\SxS\VS7"

    if ([IntPtr]::size -ne 8)

    {

        $versionSearchKey = "HKLM:\SOFTWARE\Microsoft\VisualStudio\SxS\VS7"    

    }

    $vsDirectory = ""

    if ($VSVersion -eq 'Latest')

    {

        # Find the largest number in the install lookup directory and that will

        # be the latest version.

        $biggest = 0.0

        Get-RegistryKeyPropertiesAndValues $versionSearchKey  | 

            ForEach-Object { 

                                if ([System.Convert]::ToDecimal($_.Property) -gt [System.Convert]::ToDecimal($biggest))

                                {

                                    $biggest = $_.Property

                                    $vsDirectory = $_.Value 

                                }

                            }  

    }

    else

    {

        $propVal = switch($VSVersion)

                    {

                        "2008" { "9.0" }

                        "2010" { "10.0" }

                        "2012" { "11.0" }

                        "2013" { "12.0" }

                        "2015" { "14.0" }

                        default { throw "Unknown version of Visual Studio!" }

                    }

        if (Test-PathReg -Path $versionSearchKey -Property $propVal)

        {

            $vsDirectory = (Get-ItemProperty -Path $versionSearchKey -WarningAction SilentlyContinue).$propVal

        }

        else

        {

            $vsDirectory = $null

        }

    }

    if ([String]::IsNullOrEmpty($vsDirectory))

    {

        throw "The requested Visual Studio version is not installed"

    }

    # Turns out some people install VS without the C++ tools. Crazy, I know!

    if (Test-Path -Path "$vsDirectory\vc\vcvarsall.bat")

    {

        # Got the VS directory, now setup to make the call.

        Invoke-CmdScript -script "$vsDirectory\vc\vcvarsall.bat" -parameters "$Architecture"

    }

    else

    {

        Write-Verbose -Message "Falling back to VSDEVCMD.BAT, which only supports the 32-bit tools."

        # Use VsDevCmd.bat instead.

        Invoke-CmdScript -script "$vsDirectory\Common7\Tools\VsDevCmd.bat"

    }

}

###############################################################################

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# SIG # End signature block